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sousa-gecko/testing/web-platform/tests/css/css-inline/alignment-baseline/alignment-baseline-nested-001.html
T
Sajid Anwar a3e1d680bb Bug 2010717 - Implement alignment-baseline: alphabetic/ideographic/central/mathematical/hanging. r=layout-reviewers,firefox-style-system-reviewers,dshin
Also adds WPT reftests to validate alignment behavior in horizontal and vertical
writing modes with the different `alignment-baseline` values. Additionally:

- The `alignment-baseline: middle` tests have failing expectations. This is
  because the existing implementation does not match the css-inline-3 definition
  (which the new WPTs follow). See Bug 2030203.

- The WidthTest-Regular.otf support font was updated to remove its unusual
  ideographic-under baseline value, which affected its synthesized central
  baseline. With the new support for `alignment-baseline: central`, this broke a
  number of `text-combine-upright-compression-*` WPT reftests. The non-centered
  baseline values were removed from this test using FontForge, so that the
  synthesized central baseline matched the expectation of the test references.

Differential Revision: https://phabricator.services.mozilla.com/D292136
2026-05-19 13:49:52 +00:00

25 lines
877 B
HTML

<!DOCTYPE html>
<html>
<head>
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#alignment-baseline-property">
<link rel="match" href="alignment-baseline-nested-001-ref.html">
<link rel="stylesheet" href="/fonts/baseline-diagnostic/baseline-diagnostic-font.css">
<meta name="assert" content="alignment-baseline aligns inline boxes to their parent's alignment baseline" />
<meta name="flags" content="image" />
<meta charset="utf-8">
<style>
:root {
font: 240px/1 'BaselineDiagnostic';
}
span > span {
font-size: 0.5em;
}
</style>
</head>
<body>
<div id="container">
<span>X<span style="alignment-baseline: hanging">X<span style="alignment-baseline: ideographic">X<span style="alignment-baseline: mathematical">X<span style="alignment-baseline: baseline">X</span></span></span></span></span>
</div>
</body>
</html>